Compound-lens-grinding machine.



Patented Apr. 3, |900. A. WAGNER. conPouNn Lens snmnlns uname.

' (Applicacifm med M 24. Isaia (In lodel 3 Sheets-Sheet wihfceae:

-Patented Apr. 3f, |900.

A. WAGNER. COMPOUND LENS GRINDING MACHINE` K (Application led Oct. 24, 1899.; l (No Model.) 3 Shania-Sheet 2.-

No. 646,672. Patented Apr. 3, |900.

A. WAGNER;

CMPUUNDLENS GRINDING MACHINE.

(Application med ot. 24, 1699,)-

3 Sheets-Sheet 3.

(No Mo'del.)

UNITED STATI-3s PATENT OFFICE.

-f AN'rovl WAGNER, or PHILADELPHIA, PENNSYLVANIA.

commune-LENS@lm-Dmc; MACHINE.

"sPEcrsIcArioN forming part of Letters Patent No. 646,672, datea'nprii s, 190e. Appncanon'nea october 2 4, 1899. serial Nt. 734,628. na man.)

lle it known that l', ANTON WAGNER, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania,'ha\'e invented a new and useful Improvement in Compound-Lens-'Grinding Machines, which improvement is fully set forth in the following specification and accompanying drawings.

My invention relates to an improved'conystruction of amachine for grinding lenses; and it consists ofjnovel devices whereby the.

grinding-tools are caused to operate accu` rately and eectively.

It further consists of novel details of con;

:,stiuetion, all as will be hereinafter fully described, and particularly pointed out vin the4 claims. y

Figure l represents a side-elevation of a machine for grinding lenses embodying my invention.

.fr m, Fig. 1. Fig. E? represents a plan view of Fig. l'. `Fig, represents an end elevat-ion of Fig. V1. Fig. 5 represents a side elevation of aniaehine similar to Fig. 1, but showing the "power applied to the upper grinding-tool, the

rods C are movably mounted, each of said.

rods having attached thereto a pair of heads D, which are secured in position by means of the set-screws E or similar fastening devices,

. each of the heads D having seated therein the substantially-parallel rods F, which are held in position byineans of the set-screws G or f similar'fastening devices.

Il 'designates a chuck in which the center J fof' the vplate A is inserted, said plate having the'soc'ket K, in which the ring KX, carrying `the lower grinding-tool L, is seated, said ring being held in position by means of a suitable fastening device M and said grinding-tool bel in g secured by the screw LX. The upper gri nding-t'oolN is Ap ivot'ally supported upon the yoke P by means of the pins Q, said yoke -hav-vv 'ing the rods R projecting from 'either end thereof, and each of said rods being adapted te be inserted between a contiguous pair of Fig. Zrepresents a section on line'v the parallel rods F, as will be best understood from Figs. 3 and 4, whereby itwillA be apparent-that the curved faces S and T of the upvper and lower `grinding-tool will vbe juxtzv, posed to each other under all conditions andA the grinding of the lens will be effected in a rapid arid expeditious manner, the axis of the C andthe upright rods F will be'rotated inv unison, as will also the rods R, carryiugthe yoke P` and its adjuncts. The lens'to be ground is suitably secured between the curved facesS and T, and during the-rotation of the grinding-tools the operator nieves the lever U laterally to the desired extent, whereby a' rocking [potion is imparted to the upper grindin g-tool,' si nce the latter is pivotall y supported in its yoke, which is itself capable of an axial movement by reason of its attachment to the rods R and on account of the novel manner `in which thelatter are supported between the crossed pairs of rods F, the axis of the lens which is being ground vb'eing always in a straight line.

.The structure seen in Eig. 5 embodies, substantially, the same principleas that seen in the Vpreceding figures, except that the lower grinding-tool, which is nowdcsignated as A', is stationary, the .upper grinding-tool B being pivotally mounted by means of the pins E in the yoke C', having the rods D' attached thereto. The rods D are held between the 4crossed pairs of rods F, which are secured in the heads D, Which'are mounted on the rods C,- which are secured in the bearings B on the 'plate A, substantially as already described,

said plate being secured to the shaft F', which is caused to rotate upon the application of power to the pulley G'.

yIl" designates a crank which is adapted to rotate in unison with the plate A and its adjuncts and to'actuate the stern J', which is secured to the yoke C', so as to cause said crossed, a yoke having rods extending from 4its ends and supported between the crossed ends of said upright rods, a grinding-tool.

yoke and upper grinding-tool to have a 'reciprocating motion simultaneously with its rotary motion, the axis of the lens always remaining the same by reason of the engagement of the rods D' with the rods F, the relative positions .the parts assume during rotation being understood from the dotted lines seen in Fig. 3 and it being apparent that they upper grinding-tool (seen in Figs. l, 2, 3, and 5)has by reason of the novel arrangement of its supporting devices a rotary, a reciprocatory, and an oscillatory movement with. respect to the lower Stationary grinding-tool, the advantage of which will be apparent to those skilled in the art.

Having thus described my invention, what I claim as new, and desire to secure byLett-ers Iatent, is-

l. In a lens-grinding machine, a yoke having rods extending from the ends thereof, a grinding-tool pivotally supported in said yoke, Ameans for rotating said yoke and tool, and means for imparting an oscillatory movement to said tool.

2. In a lens-grinding machine, a pairof latemily-extending rods suitably supported and substantially parallel to each other, two pairs of upright rods` supported upon each ot' said,

first-mentioned rods and adapted t0 have their ends crossed, a yoke having a grinding-tool pivotally attached thereto, rods extending from the endsot' said yoke and engaging the spaces between thecrossed ends of said upright rods, and means for actuating said yoke and the grinding-tool carried thereby.

3. v In a lens-grinding machine,a pair of laterally-extending substantially-parallel rods, heads mounted upon the ends of each of said rods, parallel upright rods mounted on said heads, the. upper ends of said rods being pivotally supported upon said yok'e, and means for actuating the latter.

4l In a lens-grinding machine, ayoke, having rods extending from the ends thereof, a grindingvtool pivotally supported in said yoke, two pairs of upright rods suitably su pported and adapted to have their ends crossed, and means foraetuating said yoke and grinding-tool.

5. In a lens-grinding machine, a plurality of substantiallyparallel upright, rods suitably supported, the upper ends of said rods i being crossed, a yoke having rods projecting from its end and supported between the crossed ends of said upright rods, agrindingtool pivotallysupported upon said yoke, and means for actuatingthe latter.

6. In a grinding-machine of the kind specified, pivoted guides capable of relative movement, and a grinding-tool having a pivot movably mounted in said guides, the axes'of the pivots ol'lsaid guides and grinding-tool being practically parallel.

' 7. In a grinding-machine of the kind specilied, pivoted guides capable of relative movement, and a grinding-tool having-a pivotlaterally and longitudinallymovable in saidl guides, the axes of the pivots ot' said guides and grinding-tool being practically parallel.

8. In a grinding-machine of the kind specified, pairs of pivot-ed guides, the guides of each pair being connected together tom'ove in unison, and having their axes in alinement, the axes of the pairs of guides being.,r parallel, and a grinding-tool having pivots engaging a guide of each ol'said pairof guides.

9. 4In a grinding-machine of the kind speciylied, a rotatable member, pivoted guidcs` mounted thereon. and capable 'of relative movement', a grinding-tool having a pivot movably mounted in said guides, the axes of the pivots of said guides and grinding-tool movement, a grinding-tool having av pivot movably mounted in said guides, the axes of the pivots of said guides and grinding-tool being practically parallel, means for oscillating said grinding-tool relative-to said rotatable member, and a companion' grinding-tool mounted upon said rotatable member.

ll. In a grindingvmachineofthekind specified, arotatable member, eoacting grinding,- tools mounted upon and rotatable with said member, and means for imparting an oscillatory movement to one of said tools.

12. In agrindingmachine of the kind .speciiied, a rotatable member, coacting grindingtools mounted upon and rotatable with said member,one of said grinding-tools being rigid with said member, the other grinding-tool being movably mounted upon said member, and means forim parti ng an oscillatory movenient to said last-mentioned grinding-tool.

ANTON WAGNER.

Witnesses:

JOHN A. WIEDERSHEIM, WM. CANEP. Wmnnnsnmu IOC 

